Gas-burner.



Patented May 27, l|902.

H. ELDRIDGE.

GAS BURNER.

(Application filed Aug. 31, 1901.)

(No Model.)

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UNTTED STATES PATENT OFFICE.

.l-IILLIARY ELDRIDGE, yOF MEMPHIS, TENNESSEE.

GAS-BURNER.v

SPECIFICATION forming part of Letters Patent No. 701,025, dated May 27, 1902. Application tiled August 31, 1901. Serial No. 74,017. (No model.)

To all whom t 1li/(ty concern.-

Be it known that I, HILLIARY ELDRIDGE, a citizen of the United States, residing at Memphis, Shelby county, State of Tennessee, have invented certain new and useful Improvements in Gas-Burners, of which the follow ing is a specification.

My invention relates to certain new and useful improvements in gas-burners for use with a 'Welsbach or other incandescent mantle.

My invention is adapted for use with ordinary coalgas, but is of special advantage with very rich gases, such as acetylene, and has for its object to make a burner which Will thoroughly mix the gas and air, and thereby give an intensely hot flame which will concentrate it upon a mantle and heat it to incandescence and which will obviate any danger of the flame striking back. i

With this object in view my invention consists in the novel combination and arrangement of parts hereinafter more fully set out in the drawings, specification, and claims.

In the drawings, Figure 1 is a sectional elevation of my improved burner, taken on the center line. Fig. 2 is a like elevation showing a modification.

Referring now to the drawings, in which like parts are indicated by like numerals in both the views, 1 is a gas-su pply pipe on which a sleeve 2 is fastened, which sleeve carries a cylinder 3, which serves as an air-receiving chamber. This cylinder I have shown as consisting of two like pieces 3 and 3, connected by a short section 3h into one integral piece and all designated for convenience the air-receiving chamber 3.

4 is a plate for use especially with rich gases, such as acetylene, between the gaspipe 1 and the air-receiving chamber 3, having small perforations 5, which permit the passage of the gas and prevent the flame striking back. These perforations also serve as regulators to gage the quantity of gas burned.

G and 7 are holes in the air-receiving cham ber 3 is an enlarged or mixing chamber 12, which is closed at the top by a reducing-cap 13, having a short discharge-nozzle 14 of reduced diameter extending upward from it to lit the mantle and steady same. This in turn is closed by a burner-cap 15, having a single central hole 16 through it.

17 is a iine Wire-gauze resting at the edges on top of the nozzle 14, held down by the burner-cap 15 and being depressed in the center to bring it'well clear of the said burner cap below the hole 16.

18 is a solid button or plate slightly larger than the hole 16, which button is carried by the gauzel'/v in close proximity to the under side of the burner-cap 15, but with a clear space between them, and which serves as a deilecting or baiiie plate for the gases and, with the line gauze, prevents the flame from striking back.

19 is the mantle which is supported over the flame by the mantle-rod 20.

21 is the chimney, preferably of mica, which chimney is carried by the gallery 22, which in turn is supported by the mixing-chamber 12.

In Fig. 2 I show. a modification in which an elongated mixing-chamber 12a, preferably of the same diameter as the air-receiving tube 3, is substituted for the short section 3 and the enlarged mixing chamber 12. In this form the elongation of the chamber 12L is depended on to secure the mixing of the gas and airaccomplished in the preceding description by the enlargement of the chamber 12, and the upper end of the mixing-chamber serves also as the discharge nozzle, so that the same form of nozzle or burner-cap 15 may be used as inthe former case. In this figure I also show a modified form 18 of the button, which modification consists in extending a short cylindrical section 18b upward into the hole 16, and thereby forming an annular hole in lieu of the circular one shown in Fig. 1. The result in both cases is apparently identical, the desideratum being to prevent the iiame striking back into the supply-pipe and to give an intensely hot and concentrated llame against a mantle. It is of course to be understood that the form of button 18 (shown in Fig. 2) may be used with the mixing-chamber l2 (shown in Fig. l)

IOO

or that the form of button 18 (shown in Fig.

' l) may be used with the mixing-chamberlQa.

- of air is taken up as the gas passes the hole 7, this supply being regulated by the sleeve The gas and air thus mixed pass upward into the mixing chamber 12 and thence through the nozzle 14 and the gauze 17, being deflected outward around the button 18 into the hole 16, where they are ignited and burn against the inside of the mantle 19. The plate 5 (or 5a) is used to prevent the flame striking back into the pipe 1 in case by any accident the gas should be ignited below the gauze 17.

It is expressly to be noted that the shape and size ot' the parts may be varied without changing the action of the burner. For instance, the nozzle for a diluted gas is necessarily larger than that shown, and the hole in tlie burner-cap is correspondingly larger. Thevangle of the top of the mixing-chamber may be made steeper, and, if so desired, the burner-cap may be made semiglobular in form or conical. For diluted gases also, as before mentioned,regulation may be provided for only one set of air-holes.

Having now fully described my invention, what I claim, and desire to secure by Letters Patent of the United States, is-

1. In a gas-burner for use with a mantle the combination with a gas-supply pipe, an air-receiving chamber mounted thereon and means of regulating the supply of air admitted to said chamber, of an enlarged mixing-chamber, a reducing-cap closing same, a central nozzle extended upward from said cap, a burner-cap closing said nozzle having a single central hole and a gauze disk supporting a battle-plate in proximity to said hole, substantially as shown and described.

2. In a gas-burner for use with a mantle, the combination with a gas-supply pipe, a perforated disk over the end of said pipe, an air-receiving chamber mounted on said pipe and means of regulating the suppl y of air admitted to said chamber, of an enlarged mixing-chamber a reducing-cap closing same, a central nozzle of :reduced diameter extending upward from said cap, a burner-cap closing said nozzle having a single central hole and a gauze disk supporting a baffle-plate below said hole, all substantially as shown and d6- scribed.

3. In a gas-burner, the combination with a gas-supply pipe, an air-receiving chamber mounted thereon, means of regulating the supply of air admitted to said chamber, a mixing-chamber above said air-receiving chamber and a discharge-nozzle, of a burner-cap closing the upper end of said nozzle, a single central hole through said cap a gauze disk below said cap and a baffle-plate slightlylarger than said hole held by said gauze in close proximity to said hole, substantially as shown and described. l

4. In a gas-burner, the combination with a gas-supply pipe, a perforated disk over the end of said pipe, an air-receiving chamber mounted on said pipe, air-inlet holes near the bottom and top of said chamber, means of regulating the supply of air admitted through said holes, a mixing-chamber above said airholes, a reducing-cap closing said chamber, and a short nozzle extending upward therefrom, of a burner-cap closing the upper end of said nozzle, a single central hole through said cap, a gauze disk below said cap and a baffle-plate slightly larger than said hole held by said gauze in close proximity to said cap, substantially as shown and described.

5. In agas-burner, the combination with a gas-supply pipe, an air-receiving chamber mounted on said pipe, air-inlet holes near the bottom and top of said chamber, means of regulating the supply of air admitted through said holes, an enlarged mixing-chamber above said air-inlet holes, a reducing-cap closing said chamber and a short nozzle extending upward therefrom, of a cap closing the upper end of said nozzle,asingle central hole through said cap, a gauze disk below said cap, abaftieplate slightly larger than said hole, held by said gauze in close proximity to same, substantially as shown and described.

In testimony whereof I have signed my IOO name to this specification in the presence of two subscribing witnesses.

HILLIARY ELDRIDGE. Nitnessem GEO. E. NEUi-IARDT, L. S. LoUDoN. 

